This heavy-duty reverse lamp switch is designed specifically for Isuzu NPR NQR models with 4BD2 3.9L and 4HE1 4.8L engines from 1994-2004. The manual control switch includes a complete wire harness setup for straightforward installation. The unit comes complete with switch assembly and necessary wiring cables. This OEM-standard compatible switch is engineered for precise control and seamless integration with your vehicle's reverse lamp system.